Indian Space Research Organisation (ISRO) to launch BlueBird Block-2 satellite for US-based AST SpaceMobile

Exam-focused facts from the 21 December 2025 current affairs briefing.

Key facts

Indian Space Research Organisation (ISRO) will launch the BlueBird Block-2 satellite of US-based AST SpaceMobile Inc. using the LVM3-M6 rocket.
The launch is scheduled from the Second Launch Pad, SDSC SHAR (Satish Dhawan Space Centre), Sriharikota.
The mission is a dedicated commercial launch facilitated through a commercial agreement with NewSpace India Limited (NSIL).
BlueBird satellites feature nearly 2,400 square feet arrays, making them the largest commercial phased arrays ever deployed in low Earth orbit.